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A&PII > Chapter 19 > Flashcards

Chapter 19 Flashcards

1
Q

P wave on ECG represents
1. repolarization ot the atria
2. repolarization of the ventricle
3. depolarization of the ventricles
4. depolarization of the the atria

A

depolarization of the the atria

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2
Q

The _____________ prevents backflow from the right ventricle into the right atrium
1. bicuspid valve
2. tricuspid valve
3. pulmonary valve
4. mitral valve

A

tricuspid valve

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3
Q

Calculate stroke volume given the following: EDV - 120 cc, ESV - 40 cc
1. 160 cc
2. 40 cc
3. 80 cc
4. 70

A

80cc

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4
Q

Which of the following contains deoxygenated blood?
1. Left atrium
2. Pulmonary vein
3. Right coronary artery
4. Coronary sinus
5. Aorta

A

Coronary sinus

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5
Q

Put the following components of the conduction system of the heart in the correct order:

  1. Purkinje Fibers
  2. SA node
  3. AV bundle
  4. AV node
  5. Bundle Branches

a.) 4 2 3 5 1
b.) 2 3 4 1 5
c.)2 4 3 5 1
d.) 1 5 3 2 4

A

24351

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6
Q

Which chamber of the heart has the thickest wall?
1. Right atrium
2. Left atrium
3. Right ventricle
4. Left ventricle

A

Left ventricle

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7
Q

The sequence of contraction of the heart chambers is:
1. Random
2. Left chambers followed by right chambers
3. Both atria followed by both ventricles
4. Both ventricles followed by both atria

A

Both atria followed by both ventricles

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8
Q

Which of the following is NOT TRUE?
1. The base of the heart rests on the diaphragm
2. The left ventricle is the pump of the systemic circuit.
3. The heart is found in the mediastinum.
4. The heart contains 2 pumps arranged in series.
5. The left ventricle generates more pressure than the right ventricle

A

The base of the heart rests on the diaphragm

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9
Q

As blood flows from the left atrium to the ascending aorta, its oxygen content will________
1. increase
2. decrease
3. stay the same
4. I don’t know

A

Stay the same

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10
Q

As end diastolic volume increases , stroke volume will__________________________________________
1. increase
2. decrease
3. stay the same
4. I don’t know

A

Increase

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11
Q

As blood flows from the aorta to the right atrium , its oxygen content will_______________
1. increase
2. decrease
3. stay the same
4. I don’t know

A

Decrease

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12
Q

A decrease in venous return will cause stroke volume to _____________________________
1. increase
2. decrease
3. stay the same
4. I don’t know

A

Decrease

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13
Q

During early ventricular systole (isovolumetric contraction) , the AV valves are ________ and the semilunar valves are __________.
1. Open – open
2. Closed – closed
3. Open – closed
4. Closed – open

A

closed-closed

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14
Q

How does sympathetic nervous system increase stroke volume?
1. By increasing the venous return
2. By increasing the filling time for the ventricles
3. By increasing contractility of the ventricles
4. By increasing the EDV

A

By increasing contractility of the ventricles

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15
Q

An increase in contractility will cause stroke volume to __________________________
1. increase
2. decrease
3. stay the same
4. I don’t know

A

Increase

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16
Q

Which of the following is NOT TRUE of the heart?
1. It is posterior to the sternum and anterior to the vertebral column
2. It is found within the mediastinum
3. It contains 4 chambers
4. The largest chamber (the left ventricle) pumps the most blood
5. The left atrium receives oxygenated blood from the pulmonary circuit

A

The largest chamber (the left ventricle) pumps the most blood

17
Q

Which of the following is TRUE?
1. Left ventricular cardiac output is usually less than right ventricular cardiac output.
2. Right ventricular stroke volume is usually less than left ventricular stroke volume.
3. Left ventricular cardiac output is usually more than right ventricular cardiac output.
4. Cardiac output from right ventricle is equal to cardiac output from left ventricle

A

Cardiac output from right ventricle is equal to cardiac output from left ventricle

18
Q

Blood is prevented from backflowing INTO the right ventricle by the:
1. mitral valve
2. bicuspid valve
3. pulmonary valve
4. tricuspid valve
5. right atrioventricular valve

A

pulmonary valve

19
Q

The following are a list of vessels and structures associated with the heart.

1) Right atrium
2) Left atrium
3) Right ventricle
4) Left ventricle
5) Vena cavae
6) Aorta
7) Pulmonary trunk
8) Pulmonary veins

a.) 1,2,7,8,3,4,6,5
b.) 5,1,3,7,8,2,4,6
c.) 5,3,1,7,8,4,2,6
d.) 5,1,3,8,7,2,4,6

A

5,1,3,7,8,2,4,6

20
Q

Which of the following is NOT TRUE?
1. Stroke volume is the amount of blood pumped by each ventricle per second.
2. Cardiac output is the volume of blood pumped by each ventricle per minute.
3. Cardiac output is the product of heart rate and stroke volume
4. Stroke volume is the amount of blood ejected from the ventricle each beat

A

Stroke volume is the amount of blood pumped by each ventricle per second.

21
Q

The depression in the adult interatrial septum is the _______________.
1. Foramen ovale
2. Foramen rotundum
3. Fossa ovalis
4. Mitral valve

A

Fossa ovalis

22
Q

The right side of the heart is associated with the ___________ circulation and the left side of the heart is associated with the ________ circulation.

  1. Thoracic; coronary
  2. Systemic; pulmonary
  3. Coronary; pulmonary
  4. Pulmonary; systemic
A

Pulmonary; systemic

23
Q

All of the following vessels empty into the right atrium EXCEPT

  1. Pulmonary trunk
  2. Superior vena cava
  3. Inferior vena cava
  4. coronary sinus
A

Pulmonary trunk

24
Q

End diastolic volume is

  1. amount of blood in each ventricle at the end of the systole
  2. amount of blood in each ventricle at the end of ventricular diastole
  3. amount of blood ejected from the ventricle with each heart beat
  4. amount of blood ejected from each ventricle in one minute
A

amount of blood in each ventricle at the end of ventricular diastole

25
Q

Pericardial fluid is found between the parietal serous pericardium and the _____________.

  1. Myocardium
  2. Endocardium
  3. Epicardium
  4. Fibrous pericardium
A

Epicardium

26
Q

Which of the following has the fastest rate of spontaneous rhythmic depolarization?

  1. AV node
  2. Bundle of His
  3. Bundle branches of His
  4. Sinoatrial node
A

Sinoatrial node

27
Q

Excessively high heart rate will cause ventricular filling time to __________________, end diastolic volume to _____________________ preload to ___________________ and stroke volume to _______________________.

  1. increase /increase/ increase / increase
  2. decrease / decrease /decrease / decrease
  3. decrease/ increase / increase / decrease
  4. increase/ decrease / increase / decrease
A

decrease / decrease /decrease / decrease

28
Q

Which of the following links AV valve flaps to the papillary muscles?

  1. Pectinates
  2. Trabeculae carneae
  3. Chordae tendineae
  4. Moderator banditos
A

Chordae tendineae

29
Q

A moderate increase in ventricular stretch due to increased venous return would _________________________ contractility of the ventricle.

  1. increase
  2. decrease
  3. stay the same
  4. I don’t know
A

Increase

30
Q

Increase in afterload will lead to ______________________of stroke volume

  1. increase
  2. decrease
  3. stay the same
  4. I don’t know
A

decrease

31
Q

The 2nd heart sound is heard when the:

  1. Atrioventricular valves close
  2. Atrioventricular valves open
  3. Semilunar valves open
  4. Semilunar valves close
A

Semilunar valves close

32
Q

What structures work to prevent prolapse (i.e., flipping up) of the atrioventricular valves?

  1. Trabeculae carneae
  2. Pectinate muscles
  3. chordae tendineae
  4. legamentum arteriosum
A

chordae tendineae

33
Q

Which of the following describe(s) cardiac contractile cells?

  1. Striated
  2. Branching
  3. Uninucleate
  4. Most numerous cell in the myocardium
  5. All of the above
A

All of the above

34
Q

The S1(first) sound of the heart is caused by the _______ of the ______.

  1. Opening; AV valves
  2. Closing; AV valves
  3. Opening; semilunar valves
  4. Closing; semilunar valves
A

Closing; AV valves

A&PII (4 decks)

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